6121081645 has 8 divisors (see below), whose sum is σ = 8394626304. Its totient is φ = 4197313104.

The previous prime is 6121081627. The next prime is 6121081651. The reversal of 6121081645 is 5461801216.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6121081645 - 2²¹ = 6118984493 is a prime.

It is a super-3 number, since 3×6121081645³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6121081645.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87443989 + ... + 87444058.

It is an arithmetic number, because the mean of its divisors is an integer number (1049328288).

Almost surely, 2^6121081645 is an apocalyptic number.

It is an amenable number.

6121081645 is a deficient number, since it is larger than the sum of its proper divisors (2273544659).

6121081645 is a wasteful number, since it uses less digits than its factorization.

6121081645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174888059.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 6121081645 is about 78237.3417557115. The cubic root of 6121081645 is about 1829.2626096373.

The spelling of 6121081645 in words is "six billion, one hundred twenty-one million, eighty-one thousand, six hundred forty-five".